Cotton gin



No v. 10, 1931. F. B. WILLIAMS COTTON GIN .F'iled March 10, 1928 awuanto'a FBWILLIAMS- Patented Nov. 10, 1931 umrsn stares rarest OFFICE FRENCH3.'WILLIAMS,',0F roar wonrn, TEXAS, AssIenoa or rivn-non'rin'rns T0 J. H. CLARK, rivn-ronrrrE-Tns 'ro r. Banana,ronn-roarrarns no n. 'r. rene- BURN, AND TWENTY-FORTIETHS To 0. a. PEES$LEY,.ALL on roar woarrrz, TEXAS core-0n Gm Application filed. March 10, 1928. Serial No. 268,731.

My invention relates-to cotton gins and more par 'icularly to means for preventing the" choking of the cotton about the ribs of the gin; and the object is to provide revolv ing ribs and other ribs which cooperate with the revolving ribs for preventing the choking of the ribs and saws and which will reduce the power required to run the gin and make it possible for the gin to run faster because it prevents the cotton from crowding and rubbing against the saws and ribs, and for these reasons the improvements make the op eration of the gin more economical. Another object is to provide means for cooperating with the ribs by aidin the forming of the.

cotton roll in the roll box. Another advantage is that the fire hazard is reduced by preventing friction of the saws and ribs against the cotton. It has beendiscovered that the cause of the fire in many instances is the friction of the cotton and saws and the particular location of the trouble is the cotton that becomes hung on the ribs and bears against the saws on the under side of the ribs, that is, after the saws pass the ribs the saws rub against the cotton that is clinging to the ribs and this is where the fire originates. The object is to provide, in addition to the ribs heretofore used, revolving ribs that will throw the cotton rollback away from the points where the saws pass through the stationary ribs and to change the shapes of the stationary ribs to cooperate with the revolving ribs. Another improvement is a doiling roller for cooperat ing with the revolving ribs, which will aid in forming the roll in the roll box. Other objects and advantages will be fully explained in the following description, and the inven tion will be more particularlypointed out in the claims.

Reference is had to the accompanying drawiugs'which form a part of this application.

Fig. 1 is a vertical section of the revolving ribs and the gin stand showing the disposition of the revolving ribs and the stationary ribs. Fig. 2 is a broken plan view illustrating the ribs, both stationary and revolving, and the dofiing roller which cooperates with the revolving ribs. Fig. 3 is a side elevation of one of the stationary ribs.

Similar characters of reference are used to indicate the same parts throughout the several views. 1

A gin stand of ordinary type isshown in the drawings provided with the improvements and saws and a brush drum. The gin has the usual roll box 1, saws2 and brush drum 8, and other parts not necessary to be described in this application. The gin stand has the shaft 4: for the saws 2. The stationary ribs 5 attached at their lower end to the frame member 6. At their upper ends, the ribs are attached to the rear of the frame member 7, instead of the front part of this frame. The ribs 5 are spaced apart for tne iassage of the saws 2 in the usual manner. The rib 5 has an arcuate divider 8 which is curved slightly to conform approXishaft 11. The saws 2 and the revolving ribs 10 revolve in the directions indicated by the arrowheads. The function of the revolving ribs 10 is to brush the cotton away from that portion of the ribs 9 through which the saws pass, and to keep the unginned cotton pushed or pressed back into the cotton roll which is revolving in the roller box. The unginned cotton is thus keptaway from the saw pasage through the ribs 9 so that nothing but lint'cotton will be carried by the saws through the ribs 9. The object is to prevent clogging of the-passage through the ribs with seed cotton and seed and parts of branches of the cotton stalks and to keep the saws clean, eX-

cept the lint cotton carried'therebyto be re moved by the brush drum 3 or other means. The curvature ofthe rib members 9 should be approximately of the curvature of the re 'volving. ribs 10. The revolving ribs 10 are driven by a belt 12, which is driven by a pulley 13, mounted on the shaft 4. The seed separating means 14 are of the usual type and need not be described herein.

The stationary ribs 9 and the revolving ribs, when arranged as above set forth, perform the function set forth in the first paragraph of this specification on page 1.

In addition to the means above described, a. doiiing roller 15 is journaled in the gin casing and positioned above the revolving ribs in order to brush the cotton which might be carried around by the revolving ribs. The dofiing roll will turn, as indicated by arrowhead, and keep the cotton brushed from the revolving ribs 10, and also forces the cotton back into the roll which is being formed in the roll box.

It is well known that cotton will form a roll in the roll box automatically. I have provided positive means for making the cotton roll turn in the roll box. A shaft 16 is ournaled in the casing and extended through the casing and provided with wings 17 which box. The dofling roller 15 thus has two functions,one function being to aid the wings 17 in forming a roll of cotton in the roll box, and the other function being to keep the cotton stripped from the ribs of the revolving ribs. The shaft 16 may be driven from the shaft 11 of the revolving ribs. The shaft 11 may be driven from the shaft 4 of the gin saws.

Various changes in the sizes, proportions and arrangements of the several parts may be made without departing from my invention.

Ginning has heretofore been done with the saws cuttin into hard packed rolls in the roll box. It has been thoroughly demonstrated that the construction herein described results in making'soft rolls in the roll box instead of the hard packed rolls heretofore made. With the saws running in soft rolls,

the gins gin much faster and gin much more cotton, practically doubling the output of ginned cotton. One advantage of the saws pulling the cotton from soft rolls 1s that the saws pull the fibre withoutbreaking the fibre and thus produce smoother cotton without gin cuts and napped cotton. This adds materially to the value of the cotton and the sample of the cotton and the cotton brings higher prices. By eliminating the gin cuts and napped cotton, the spinning value is greatly increased.

hat I claim, is,-

1. In a cotton gin provided with a gang of saws and a roll box and a frame therefor; stationary ribs attached to said frame above and below said saws, revolving ribs positioned above said saws and backwardly of said roll box and projecting between said saws, a dofiing roller above said revolving ribs for brushing seed cotton from said revolving ribs, said revolving ribs serving to brush cotton from said stationary ribs prior to the passage of the saws between said stationary ribs.

2. In a cotton gin provided with a gang of saws and a. roll box and stationary ribs and a frame; revolving ribs provided with a shaft to be driven and co-operating with said stationary ribs for spacing the seed cotton from the said stationary ribs at the passage of the saws from between said stationary ribs, said stationary ribs having members curved under and behind said revolving ribs and attached to said frame above said revolving ribs, and a doiiing roller in close proximity to said revolving ribs for brushing cotton from said revolving ribs and co-operating with said revolving ribs in aiding the formation of the roll of cotton in said roll box.

3. In a cotton gin provided with a gang of saws and a roll box and stationary ribs; revolving ribs provided with a shaft to be driven and co-operating with said stationary ribs by spacing the seed cotton fromsaid stationary ribs at the passage of the saws from between said stationary ribs, a doffing roller in close proximity to said revolving ribs for brushing cotton from said revolving ribs, and arcuate members formed on said stationary ribs, said arcuate members .and revolving ribs and doffing roller co-operating in aiding the formation of the roll of cotton in said roll box.

4. In a cotton gin provided with agang of saws and a roll box and stationary ribs; revolving ribs co-operating with said stationary ribs provided with arcuate members, a dofiing roller co-operating with said revolving ribs, and a revolving shaft in said roll box provided with wings, said winged shaft and revolving ribs and doffing roller and arcuate members co-operating in forming a roll of cotton in said roll box.

5. In a cotton gin provided with a gang of saws and a roll box and stationary ribs; revolving ribs co-operating with said stationary ribs, a dofiing roller co-operating with said revolving ribs, a revolving shaft in said roll box provided with wings, and arcuate members formed on said stationary ribs, said arcuate members, doffing roller, revolving ribs, and winged shaft co-operating to form a roll of cotton in said roll box.

In testimony whereof, I set my hand, this 27th day of December, 1927. I

FRENCH B. IVILLIAMS. 

